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A dual axis stable and fast reflector device based on flexible hinge

A technology of flexible hinges and mirrors, applied in installation, instrumentation, optics, etc., can solve the problems of misalignment between the center of gravity of the load and the centerline of rotation, low stiffness ratio, etc., and achieve good resistance to external vibration interference, improved stiffness ratio, and compact structure Effect

Active Publication Date: 2022-03-15
西安应用光学研究所
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  • Application Information

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Problems solved by technology

[0004] There are two problems in the above fast mirror device based on flexible hinges. One is that the center of gravity of the moving part of the device (mainly including mirrors, mirror holders, motor movers and the upper structure of the flexible hinge), that is, the center of gravity of the load does not coincide with the center line of rotation; is a flexible hinge with a low stiffness ratio between the rotational degrees of freedom and the constrained degrees of freedom

Method used

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  • A dual axis stable and fast reflector device based on flexible hinge
  • A dual axis stable and fast reflector device based on flexible hinge
  • A dual axis stable and fast reflector device based on flexible hinge

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Embodiment Construction

[0028] The dual-axis stable fast mirror device based on the flexible hinge proposed by the present invention is as Figure 1~3 As shown, it includes: 1 base, 2 reflectors, 3 mirror holders, 4 drive motors, 5 flexible hinges, 6 position sensor sensing plates, 7 limit posts, 8 position sensors.

[0029] From figure 1 , figure 2 , image 3 It can be seen that the connection relationship of each part of the device is as follows: the reflector is bonded and fixed on the mirror holder; the upper end of the flexible hinge is connected with the mirror holder through screws; the lower end of the flexible hinge is fixed on the base; four position sensors and four drive motors The cross is arranged around the flexible hinge. In this embodiment, the driving motor adopts a voice coil linear motor, its coil (mover) is fixed on the mirror holder, and the permanent magnet is fixed on the base to drive the movement of the mirror; the position sensor is an eddy current sensor, which is desi...

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Abstract

The present invention proposes a dual-axis stable fast mirror device based on a flexible hinge, including a base, a mirror, a mirror holder, a drive motor, a flexible hinge, and a position sensor; the flexible hinge is divided into three parts: The upper part, the cross-shaped middle part and the lower part with the base installation surface; the center of the mirror holder installation surface is coaxial with the center of the base installation surface; the bottom surface of the upper part with the mirror holder installation surface and the upper surface of the cross-shaped middle part pass through the thin wall of the first flexible hinge Connection, the lower surface of the cross-shaped middle part and the lower upper surface with the base mounting surface are connected through the second flexible hinge thin wall; the first flexible hinge thin wall and the second flexible hinge thin wall are perpendicular to each other, and the central axis of the mirror holder mounting surface and The central axis of the base installation surface intersects the thin wall of the first flexible hinge and the thin wall of the second flexible hinge. The invention realizes the coincidence of the center of gravity of the load of the fast reflector device and the rotation centerline of the flexible hinge, and improves the stiffness ratio between the rotation degree of freedom and the restriction degree of freedom of the flexible hinge.

Description

technical field [0001] The invention belongs to the technical field of precision optical-mechanical structure design, and in particular relates to a flexible hinge-based dual-axis stable fast mirror device suitable for complex vibration environments. Background technique [0002] The fast mirror device is widely used in various stable tracking platforms due to its high precision, fast response and small dynamic lag error. Flexible hinge design is currently a major concern in the design of fast mirrors. Compared with frame-type fast mirror devices based on traditional shafting structures, flexible hinges replace the shafting structure, thereby eliminating the need for fast mirror devices. The friction of the shaft system during use has laid a mechanical structure foundation for improving the performance of the fast mirror. [0003] The application number is 20160545592.4, and the name is "a series load-bearing fast reflector structure". A series load-bearing reflector struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/182G02B7/18
CPCG02B7/1821
Inventor 王明超王惠林姜世洲齐媛杨晓强高瑜王涛程刚曹尹琦
Owner 西安应用光学研究所
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